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Humanity Direct Chiltern Challenge

13-Jul-2019 Princes Risborough, Buckinghamshire, UK (England)


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Trail Race Race Terrain
50KM / 31Miles
1 Day - 315 Runners

DIFFICULTY Race Difficulty Beginner  

Entry From £58 GBP

After very successful Humanity Direct Ultras in 2016, 2017, and 2018, XNRG are again partnering with the charity funding vital operations for little children with a number of one-day 50 km challenges. These events are open to walkers and runners, young and old, experienced or inexperienced. These events are very popular as first-time ultras.

We are offering a special opportunity to run or walk 31 stunning miles of Chiltern Hills for FREE if you sign up to raise some money for Humanity Direct patients.

Alternatively, donate £58 to register – all the money will go to an operation to save or vitally improve a little child’s life - and you will have the opportunity to challenge yourself to do something amazing in 2019.

As with all of our events, everything is taken care of at the HD Chiltern Challenge, so you can focus on the experience! We’ll provide free transfers from and to the train station, free parking, changing facilities and heaps of tea, coffee and cake.

Within easy reach of London, the event will start and finish at Princes Risborough School, HP27 0DR. The 31 mile route takes in many areas of natural beauty in the Chilterns, including Ashridge Forest, the Grand Union Canal and Wendover Woods.

The Humanity Direct Chiltern Challenge is run on National Trails and Footpaths and will be comprehensively marked with signs and confidence tape. The event is supported by a course manager to maintain event safety and to manage any serious incidents. A fully qualified medical crew are in attendance to give first aid and to manage any serious medical problems in cooperation with the emergency services.


Event Organiser
Lorraine Stone



Elevation: Very little change < 500 metres. Benign running terrain, not technical.

Suitable for: First ultra runners completing a marathon or doing regular long distance running in the last six months.


Elevation: Increase of up to 1000 metres

Suitable for: Runners who have completed at least one ultra distance race (or similar event) or are doing long distance running (>26 miles) regularly, with elevation shown.


Elevation: Increase of up to 1500 metres

Suitable for: Runners who have completed several ultra distances or similar events, or are doing long distance running regularly, with elevation shown.


Elevation: Increase of up to 2000 metres with some challenging climatic conditions (e.g. ice, snow, humidity or heat) and or technical terrain

Suitable for: Experienced runners who have completed at least regular ultra distances in last 12 months, or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races may be subject to evidence of recent qualifying race participation and recent medical examination certificate. Check with the race organiser regarding entry requirements.


Elevation: Increase of up to 2000 metres with very challenging climatic conditions (e.g. ice, snow, humidity, heat or at high altitude) and or technical terrain.

Suitable for: Very experienced long distance ultra runners (min 3 years’ experience) or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races is often subject to evidence of recent qualifying race participation and recent medical examination certificate. Purchase of specialist kit is often recommended for these races.

Endurance - Multi-activity

Type: An ultra distance race including at least two of the following activities such as running, swimming, cycling, kayaking, skiing and climbing. It may also include different climatic conditions (eg ice, snow, humidity, cold water, mud or heat).

Suitable for: Experienced multi-skilled athletes who have trained for the different activities included in this event. Admission to these races may be subject to receipt of a recent medical examination certificate. Check with the race organiser regarding entry requirements and any specialist equipment required such as a wetsuit, skis or a mountain bike.

Global - Virtual

Type: A virtual race which can be run at any time shown on the dates shown, on any type of terrain in any country.

Suitable for: For runners from beginners to experienced as you choose your own course and challenge based on the guidelines and options set by the virtual race organiser.

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Review Humanity Direct Chiltern Challenge

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07:54 20-09-18

Did this as my first ultra and was thoroughly spoilt with the organisation of the event and the aid stations that were packed with a good varied selection of food and nibbles. The map was not needed as it was well marked.
Hilly bits throughout but the views through the course were great. Would recommend it for any first timers.
A big thank you to the volunteers at the aid stations who were incredibly helpful in keeping you cool this year in the blazing heat.

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04:18 12-08-18

I did this in 2017 as my first ultra. Can't think of a single negative thing to say. Organisation was top-notch. Markings were flawless. Aid stations were superb.

Highly recommend as a first ultra. Whilst the route is hilly, there's only a few steep bits including the start/end. Poles are not needed and you can use road shoes rather than trail ones if it isn't a wet day (I wore Hoka Cliftons).

Whilst you should bring map/compass/offline-map-on-phone, I didn't need any of them on the day.

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12:56 15-07-18

I have done a number of ultras including repeated events by the organiser of this event. I would put this event down as one of my favourite due to the scenic beauty. I admit it was a sunny day but it was beautiful. A very well sign posted route so didn't need the map that was issued. Good food and water stops and good distances and to finish, a nice medal with a very well designed t shirt that is one of the better t shirts. The size is perfect, its a technical t shirt and has a great picture on the back with simply smart effects on the front. Not nasty attention grabbing advertisement I have become use to. Well done for a top race and Bling.

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10:43 22-07-17

Ran this as my first ultra and was overwhelmed by the support, enthusiasm and energy of everybody involved. The race could not have been better organised or supported, sign-posting was clear, and a lovely quality medal too. Great route and views - would definitely recommend!!

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10:50 21-07-17

This was my first ultra event and I'm already looking forward to running it again next year! The race was organized well, the route was clear, and every 10k or so, there was more than enough refreshments to keep the runners going. Thank you all so much who got involved in the race and cheered us on, that really helped me drive home to finish :)

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10:54 16-06-17

I ran this race as my first ultra after hearing fantastic things about it and it being a 'beginner' intro race to ultra's. What can i say the race is fantastically organised with a cp every 10k or so which are all stock well with water and food, directions on course are great and where you need to cross a road, a volunteer was there to see you across, some stunning scenery on the Chiltern pathway help you tick the miles off and its a friendly race. fully recommend this race so much i'm running it again this year.

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09:11 05-08-16

A fantastic race for all abilities. A short drive from London in a beautiful location. The route was varied with forest trails and open fields. Terrain in undulating with plenty of runnable sections. CPs are perfectly spaced and sticked up with all the right food and plenty to choose from, from homemade rocky roads to peanut butter and nutella sandwiches. Staff are very friendly and relaxed. The whole race has a brilliant atmosphere and it was a pleasure to take part this year! Nothing negative to say! Thank you XNRG! Marina

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02:29 27-07-16

My first ultra event and what else can I say but "outstanding". From the friendly welcome at the registration desk and the relaxed atmosphere to the perfectly marked course and supreme organisation. I have been running competitively on the road up to half marathon for about 4 years but had never completed anything like this. In fact I have only completed one marathon and that was a last minute entry given to me. This was potentially a daunting event but Extreme Energy have come up with a perfect event here. It had the perfect balance of a friendly and relaxed atmosphere, ideal for first timers and a challenging course with a reasonably good level of runner at the front of the pack. Can not wait to try another of Extreme Energy's events. Thank you.

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10:32 27-07-16

My first experience of an Extreme Energy event, and it is safe to say that it won't be my last. Smooth, friendly and efficient organisation throughout with a well signposted/marked course through the beautiful Chiltern countryside.
It was a testing course along a mixture of trails, footpaths, fields and country roads with a few big hills thrown in for good measure. Add to that the heat of the day and the race was a real challenge for beginners and seasoned runners alike. Whilst this event is billed as a beginners ultra and an introduction to those runners who have never tackled more than a marathon, it really is for everyone and because of this the atmosphere was brilliant.
I personally really enjoyed the concept of having the walkers go off at 8am, followed by the Ultra Runners at 9am, and then the speedy crazy runners at 10am. This ensured that there were always people to chase rather than having long periods of isolation which can happen at ultra events.
T-shirt and medal awarded to all finishers, and some nice refreshments laid on at the end for runners.. with some delicious cake! Can't speak highly enough about the event. Great Fun and an excellent day out!

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07:49 27-07-16

My second ultra, my first with Extreme Energy, and this was by far the better organised. Great pre-run information, easy registration, helpful team of staff and volunteers, well signed route, and good tshirt & medal!

The run itself was tough but enjoyable. Ran in 2016 and it was a hot, clear, sunny day. Stunning views across the Chilterns and surrounding area. Plenty of variety along the route, differing terrain, narrow paths through nettles, wide paths through cooling woods, across corn fields, up/down steep steps. A good number of stiles, gates, tree routes to keep you alert.

Billed as an intro ultra, and from the organisation side I can see why it appeals. The organisation around this event is really how they should all be done! From the run itself, this is a good challenge and would be enjoyable regardless of how many you've run. I'd return in future!

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